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$1,047+ Cheap flights from Islip (ISP) to Dublin (DUB)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — DUB
Oct 9 — Oct 161
Thu 10/9
Thu 10/16
1 adult, Economy
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Cheap flight deals from Islip to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Dublin (DUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 9, 2025.

Round-trip from

$1,047
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$550
From Islip Long Island to Dublin
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Islip to Dublin

Cheapest flights from Islip to Dublin
Explore the most affordable flight options available from Islip to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/239:37 pmISP - DUB
2 stops32h 53mMultiple Airlines
Thu 10/301:45 pmDUB - ISP
1 stop24h 52mMultiple Airlines
Deal found 9/8$1,047
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/228:45 pmISP - DUB
2 stops33h 45mMultiple Airlines
Wed 10/294:45 pmDUB - ISP
1 stop22h 13mMultiple Airlines
Deal found 9/7$1,050
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/205:05 pmISP - DUB
2 stops31h 00mMultiple Airlines
Sat 9/271:55 pmDUB - ISP
1 stop25h 45mMultiple Airlines
Deal found 9/7$1,100

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Dublin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 9, 2025.
Use the filters below to find and compare flights from Islip to Dublin that are best for you.

Fly from

Islip

Fly to

Dublin

Route

Depart

Return

Price

IslipDublin

ISP - DUB

ISPDUB

Islip Long Island

Thu 10/23

9:37 pm-11:30 am

2 stops32h 53m

Dublin

Thu 10/30

1:45 pm-10:37 am

1 stop24h 52m

$1,047

IslipDublin

ISP - DUB

ISPDUB

Islip Long Island

Wed 10/22

8:45 pm-11:30 am

2 stops33h 45m

Dublin

Wed 10/29

4:45 pm-10:58 am

1 stop22h 13m

$1,050

IslipDublin

ISP - DUB

ISPDUB

Islip Long Island

Sat 9/20

2:19 pm-4:30 am

1 stop9h 11m

Dublin

Sat 9/27

12:40 pm-8:01 pm

1 stop12h 21m

$1,439

IslipDublin

ISP - DUB

ISPDUB

Islip Long Island

Sat 9/20

11:53 am-10:20 am

2 stops17h 27m

$4,624

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/7

Best time to book a flight from Islip to Dublin

Have a flexible travel schedule? Discover the best time to fly to Dublin from Islip with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Islip to Dublin

What is the cheapest month to book a flight from Islip to Dublin?

Currently, November is the cheapest month in which you can book a flight from Islip to Dublin (average of $509). Flying from Islip to Dublin in June is currently the most expensive (average of $924). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Islip to Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Islip to Dublin that include hotel bookings?

    Yes. In addition to deals on Islip to Dublin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Dublin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Dublin.

  • Can I find deals for business class flights from Islip to Dublin?

    Yes. Cheapflights offers flight deals from Islip to Dublin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Islip to Dublin?

    Currently, November is the cheapest month in which you can book a flight from Islip to Dublin (average of $509). Flying from Islip to Dublin in June is currently the most expensive (average of $924). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Maynooth
Castleknock
Swords
Wicklow
Leixlip

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